Metal-window construction



Dec. 18, 1928.

J. E. DENNIS METAL WINDOW CONSTRUCTION Filed July 19, 1912s Ill/II Inventor Jo m EdwinDennIs extend into the slots formed by the channels in said separate sheet and the overlapping free edges of the box structure, the flanges of the T bars having their faces right angularly arranged in relation to the Webs engaging a longitudinal face of the channels formed in the single sheet.

2. A metal Window comprising a frame formed of a single sheet of metal shaped into rectangular box-like form having the free edge portions flanged into a common plane with the edges thereof spaced apart, a separate sheet of metal extending across the open side of said box frame and engaging the flat inner faces of the free edge portions in rigid sealing contact, said latter sheet being formed with longitudinal rectangularshaped channels opening toward the sash opposite the edges of said flanged edge por' tions. and sash formed of T-hars having their w 1) portions slidahly engaging the outer side ot said flanged edge portions of the hex frame and their head flanges extending past the free edges of the box flanges into said channels and having one side slidahly engaging the flat channel Wall.

JOHN E. DENNIS. 

